include/opencascade/BRepClass_Intersector.hxx

0001 // Created on: 1992-11-19
0002 // Created by: Remi LEQUETTE
0003 // Copyright (c) 1992-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _BRepClass_Intersector_HeaderFile
0018 #define _BRepClass_Intersector_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022
0023 #include <Geom2dInt_IntConicCurveOfGInter.hxx>
0024 class gp_Lin2d;
0025 class BRepClass_Edge;
0026 class gp_Dir2d;
0027
0028 //! Intersect an Edge with a segment.
0029 //! Implement the Intersector2d required by the classifier.
0030 class BRepClass_Intersector : public Geom2dInt_IntConicCurveOfGInter
0031 {
0032 public:
0033   DEFINE_STANDARD_ALLOC
0034
0035   Standard_EXPORT BRepClass_Intersector();
0036
0037   //! Intersect the line segment and the edge.
0038   Standard_EXPORT void Perform(const gp_Lin2d&       L,
0039                                const double          P,
0040                                const double          Tol,
0041                                const BRepClass_Edge& E);
0042
0043   //! Returns in <T>, <N> and <C> the tangent, normal
0044   //! and curvature of the edge <E> at parameter value
0045   //! <U>.
0046   Standard_EXPORT void LocalGeometry(const BRepClass_Edge& E,
0047                                      const double          U,
0048                                      gp_Dir2d&             T,
0049                                      gp_Dir2d&             N,
0050                                      double&               C) const;
0051 };
0052
0053 #endif // _BRepClass_Intersector_HeaderFile